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Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
Objective The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods The sample comprised the cone beam computed tomographies (CBCTs) of 58 s...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Thieme Medical and Scientific Publishers Private Ltd.
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274827/ https://www.ncbi.nlm.nih.gov/pubmed/32438429 http://dx.doi.org/10.1055/s-0040-1709932 |
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author | Ferreira, Marcos Cezar Freitas, Karina Maria Salvatore de Herrera-Sanches, Francyle Simões Santos, Patrícia Bittencourt dos Garib, Daniela Janson, Guilherme Freitas, Marcos Roberto de |
author_facet | Ferreira, Marcos Cezar Freitas, Karina Maria Salvatore de Herrera-Sanches, Francyle Simões Santos, Patrícia Bittencourt dos Garib, Daniela Janson, Guilherme Freitas, Marcos Roberto de |
author_sort | Ferreira, Marcos Cezar |
collection | PubMed |
description | Objective The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods The sample comprised the cone beam computed tomographies (CBCTs) of 58 subjects divided into three groups according to the facial patterns: 18 brachyfacial (Group 1), with a mean age of 21.58 years; 23 mesofacial (Group 2), with a mean age of 19.14 years; and 17 dolichofacial subjects (Group 3), with a mean age of 19.09 years. Eight variables were evaluated on CBCT scans of each subject: buccal and lingual mandibular height, cervical and middle mandibular width, inclination of mandibular body, inclination of the mandibular molar buccal surface, molar width, molar angulation and tooth/bone angle. Intergroup comparisons were performed with one-way analysis of variance followed by Tukey tests. Results Buccal mandibular height presented statistically significant difference in the three facial patterns. Lingual mandibular height and mandibular inclination showed to be statistically and significantly smaller in brachyfacial subjects than in the other two groups. Mandibular width presented a statistically significant difference between brachyfacial and mesofacial groups. Negative correlations could be observed between the facial pattern and the buccal and lingual mandibular heights and inclination of the mandibular body. Conclusion Buccal mandibular height was significantly and progressively larger in brachyfacial, mesofacial, and dolichofacial subjects. Lingual mandibular height was significantly smaller in brachyfacial than in mesofacial and dolichofacial subjects. Mandibular width was significantly thicker in brachyfacial than in mesofacial subjects. Brachyfacial subjects had smaller mandibular inclination than mesofacial and dolichofacial subjects. |
format | Online Article Text |
id | pubmed-7274827 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Thieme Medical and Scientific Publishers Private Ltd. |
record_format | MEDLINE/PubMed |
spelling | pubmed-72748272020-06-10 Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study Ferreira, Marcos Cezar Freitas, Karina Maria Salvatore de Herrera-Sanches, Francyle Simões Santos, Patrícia Bittencourt dos Garib, Daniela Janson, Guilherme Freitas, Marcos Roberto de Eur J Dent Objective The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods The sample comprised the cone beam computed tomographies (CBCTs) of 58 subjects divided into three groups according to the facial patterns: 18 brachyfacial (Group 1), with a mean age of 21.58 years; 23 mesofacial (Group 2), with a mean age of 19.14 years; and 17 dolichofacial subjects (Group 3), with a mean age of 19.09 years. Eight variables were evaluated on CBCT scans of each subject: buccal and lingual mandibular height, cervical and middle mandibular width, inclination of mandibular body, inclination of the mandibular molar buccal surface, molar width, molar angulation and tooth/bone angle. Intergroup comparisons were performed with one-way analysis of variance followed by Tukey tests. Results Buccal mandibular height presented statistically significant difference in the three facial patterns. Lingual mandibular height and mandibular inclination showed to be statistically and significantly smaller in brachyfacial subjects than in the other two groups. Mandibular width presented a statistically significant difference between brachyfacial and mesofacial groups. Negative correlations could be observed between the facial pattern and the buccal and lingual mandibular heights and inclination of the mandibular body. Conclusion Buccal mandibular height was significantly and progressively larger in brachyfacial, mesofacial, and dolichofacial subjects. Lingual mandibular height was significantly smaller in brachyfacial than in mesofacial and dolichofacial subjects. Mandibular width was significantly thicker in brachyfacial than in mesofacial subjects. Brachyfacial subjects had smaller mandibular inclination than mesofacial and dolichofacial subjects. Thieme Medical and Scientific Publishers Private Ltd. 2020-05 2020-05-21 /pmc/articles/PMC7274827/ /pubmed/32438429 http://dx.doi.org/10.1055/s-0040-1709932 Text en https://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited. |
spellingShingle | Ferreira, Marcos Cezar Freitas, Karina Maria Salvatore de Herrera-Sanches, Francyle Simões Santos, Patrícia Bittencourt dos Garib, Daniela Janson, Guilherme Freitas, Marcos Roberto de Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study |
title | Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study |
title_full | Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study |
title_fullStr | Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study |
title_full_unstemmed | Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study |
title_short | Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study |
title_sort | evaluation of mandibular first molars’ axial inclination and alveolar morphology in different facial patterns: a cbct study |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274827/ https://www.ncbi.nlm.nih.gov/pubmed/32438429 http://dx.doi.org/10.1055/s-0040-1709932 |
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